Selection & Compatibility
Which amplifier family should I choose—αi or βi?
Match the amplifier to the motor family and controller you’re using. As a rule, αi modules pair with αi motors for high-performance CNC axes; βi suits cost-efficient/general axes. Always verify controller support and encoder type.
How do I size the amplifier for my axis?
Start from the motor’s continuous/peak current and the application’s duty (positioning vs continuous feed). Choose an amplifier whose rated output current covers continuous demand with margin and can handle peak decel/accel without nuisance trips.
Can I mix single- and dual-axis amps in the same machine?
Yes—many machines combine single-axis for spindles or heavy axes and dual/triple for lighter axes. Keep voltage class, bus configuration, and firmware consistent
Installation & Commissioning
Do I need a separate power or regen unit?
If the amplifier doesn’t integrate the chopper—or your cycle has heavy decel energy—use a regenerative or braking unit sized for the worst-case duty. Shared DC bus designs often require a specific power supply module.
What about wiring and noise immunity?
Use shielded motor/feedback cables, maintain grounding integrity, route power and signal separately, and follow the recommended cable lengths/bend radii. Good EMC practice prevents encoder noise and overcurrent trips.
Service, Alarms & Lifecycle
Common alarm causes?
Most field issues trace to overcurrent (mechanical binding), encoder/feedback faults, undervoltage, or regen resistor sizing. Check mechanics, power quality, and parameter sets first.
How do I reduce unplanned downtime?
Keep spares for critical amps, back up parameters, inspect fans/filters, and trend alarm history. Align firmware across axes after replacements.
Migration path for older amplifiers?
When replacing legacy units, map axis current needs, voltage class, bus topology, and control compatibility. Many shops modernize axis-by-axis while keeping the machine base and field wiring.